I got my refurbed TP2 from Sprint for $35 a few weeks ago. My touchscreen was giving me trouble (probably because I gave it a lot of trouble first
). I love my SERO 500 with Pick 3 & Pick 2 in combination with Google Voice. I use Magicall to modify all calls I make to dial them through Google Voice (I haven't found anything comparable on Android).
BTW, I'm in Minneapolis, and have had great customer service and reception coverage with Sprint. Even if I paid full price for my phone and service, I don't think I'd complain much. Certainly with SERO + Google Voice (and other deals I've snagged over the years), I'm going to stick with Sprint for a long time.
I'm very happy with my TP2 right now and have no plans to upgrade. I picked up a refurbed Nook Color and put CM7.1 on it. Tethering that to my TP2 gives me a very good Android experience and so far has stifled my urge to upgrade my phone/plan with Sprint. I'm sure I'll end up on the SERO-P $50 plan one day, but not today.